Figure 6From: Transcriptome analysis of the filamentous fungus Aspergillus nidulans directed to the global identification of promotersBase composition around transcription start sites. The proportions of bases from 100 bp upstream to 25 bp downstream of putative 4637 ‘tight’ transcription start sites (100-200 bp upstream shows no perturbation from the 25% expected by chance and is not shown). The region is enriched for C from approximately position -75 and for C and T from approximately position -50. A peak of A and T is seen in the region -45 to -30, which may indicate putative TATA box motifs. Nucleotide C peaks at position -1 and nucleotide A at the transcription start site, followed by C.Back to article page